1I4D	Signaling Protein	date	Feb 20, 2001
title	Crystal Structure Analysis Of Rac1-Gdp Complexed With Arfapt
authors	C.Tarricone, B.Xiao, N.Justin, S.J.Gamblin, S.J.Smerdon
compound		source
Molecule: Arfaptin 2 Chain: A, B Fragment: Residues 118-341 Synonym: Partner Of Rac1 Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Expression_system: Escherichia Coli Expression_system_taxid: 562
Molecule: Ras-Related C3 Botulinum Toxin Substrate 1 Chain: D Synonym: P21-Rac1 Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Expression_system: Escherichia Coli Expression_system_taxid: 562
symmetry	Space Group: P 1 21 1	R_factor 0.238 R_Free 0.298
crystal cell	length a length b length c angle alpha angle beta angle gamma 63.566 47.462 125.311 90.00 97.51 90.00
method	X-Ray Diffraction	resolution	2.50 Å
ligand	GDP, MG	enzyme
note	1I4D is a representative structure
related structures	by homologous chain: 1A4R, 1I4T, 1KZG
Gene Ontology	Chain Function Process Component A, B D
Primary reference	The structural basis of Arfaptin-mediated cross-talk between Rac and Arf signalling pathways., Tarricone C, Xiao B, Justin N, Walker PA, Rittinger K, Gamblin SJ, Smerdon SJ, Nature 2001 May 10;411(6834):215-9. PMID:11346801

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (97 Kb) [Save to disk] Biological Unit Coordinates (1i4d.pdb1.gz) 91 Kb LPC: Ligand-Protein Contacts for 1I4D CSU: Contacts of Structural Units for 1I4D Likely Quarternary Molecular Structure file(s) for 1I4D Retrieve 1I4D in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1I4D from S2C, [Save to disk]

View 1I4D in 3D

Proteopedia, because life has more than 2D. On Jmol, a nice Rasmol like molecule viewer. This is good for easiest viewing of basic structure. On FirstGlance, an excellent tool for a guided tour on the structure components, by E. Martz.

Visual 3D analysis of 1I4D

Ramachandran plot from PDBSum

Structure-derived information

Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 1I4D, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1i4da_, region A [Jmol] [rasmolscript] [script source]     - Domain d1i4db_, region B [Jmol] [rasmolscript] [script source]     - Domain d1i4dd_, region D [Jmol] [rasmolscript] [script source] Class (fold), Architecture (subfold), Topology, Homologous superfamily from CATH Summaries and structural analyses of PDB data files from PDBSum Identification of Protein Pockets & Cavities at CASTp

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [1i4d_B] [1i4d_A] [1i4d] [1i4d_D] SWISS-PROT database: [P53365] [P63000] Domain organization of [ARFP2_HUMAN] [RAC1_HUMAN] by SWISSPFAM Domains found in 1I4D: [Arfaptin] [RHO ] by SMART

Other resources with information on 1I4D

Community annotation for 1I4D at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

Movements, Movies and Images

Domain movements in 1I4D from the Database of Macromolecular Movements. Images from IMB Jena Image Library of Biological Macromolecules.

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